The valve function is to pump a small part of the tire and maintain
the seal after the tyre is inflated.The normal valve mouth is
composed of valve body, air core and valve cap.The inner tire is fitted to the inner tyre and the tyre is not
fitted on the rim.The structure can be divided into rubber metal valve mouth and the
metal valve mouth with rubber pad.The former is used for the inner
tire of a car tire, the latter is mainly used for the tire inner
tube.The internal structure of the inner tube is the same as the
normal valve.

Installation instructions:

1. Remove the valve core and air.2. Separate the air port of the tire and remove it from the wheel.Remove the valve nozzle.4. Clean the hole in the steel and remove dirt and dirt.5. Install the new valve nozzle inside the wheel steel.6. Properly install the tire and inflate it to the fixed pressure.Put on a new valve cap.

The emergency:

Sudden events are the steering wheel that is out of control or the
steering wheel is out of control, and the steering wheel doesn't
work when the wheel isn't moving.Causes of the steering control may be because of driving too fast,
fatigue, poor snow and slippery roads, cars, sometimes in the
steering wheel steering parts loss, damage, binding, also can make
steering suddenly out of control.The correct way to deal with steam loss is:1. When the driver is not in a panic, he should release the
accelerator pedal immediately to enable the motor vehicle to stop
at low speed, and tighten the hand brake evenly and evenly.2. If the speed is falling obviously, step on the brake and stop
the vehicle.If the vehicle is in a high speed, especially if the
front and rear wheels are not in a straight line, use the hand
brake to slow down, then step on the emergency brake;3. The emergency signals should be given to other vehicles and
pedestrians at this time, such as turning on the emergency flashing
lights, honking, gesturing, etc.Do not use emergency braking
immediately to avoid a rollover.4. Do not slow down or push down the clutch, so that the engine
will not slow down.5, to the cars with power steering, if suddenly found it difficult
to, or engine stalling, at this time is also can realize to the
driver, just very hard to operate, then depends on feeling cool,
careful driving.